XTE-HF Solar Cell
Spectrolab
Spectrolab's XTE High Fluence 32% BOL triple-junction solar cell for MEO and very high radiation environments exceeding 1e15 fluence, achieving 23.6% efficiency at 1e16 fluence.
Typed specifications13 values
Discloses 5 of 7 fields engineers filter by in this category (category median 2).
- Mass
- 50–84 g product page
- Cell efficiency
- 32.1 % BOL · datasheet p.1 23.7 % EOL, 1E16 1MeV electron
- Envelope (L×W×H)
- 3.97 cm 27cm2 Class · datasheet p.2
- Array configuration
- other Space Qualified Triple Junction Solar Cell (bare cell product) · datasheet p.1
- Cell type
- triple-junction GaAs Space Qualified Triple Junction Solar Cell · datasheet p.1
- Cell part number
- Spectrolab XTE-HF (High Fluence) datasheet p.1
- Open-circuit voltage at the panel output (Voc)
- 2.78 V datasheet p.1
- Max-power voltage at the panel output (Vmp)
- 2.49 V datasheet p.1
- Flight heritage
- Based on 20+ years of heritage 3J devices; fully qualified under AIAA-S111 2014 datasheet p.1
- Cell area
- 77 cm² 77 cm2 class (rectangular cell) · datasheet p.2 27 cm² cell size of the datasheet parameters; 27cm2 class (rectangul…
- Power temperature coefficient
- -5.7 %/°C datasheet p.2
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier18 lines, in the manufacturer's own wording
- BOL efficiency
- 32%
- EOL efficiency at 1e16 fluence
- 23.6%
- Cell technology
- GaInP/GaAs/Ge lattice matched triple-junction (3J)
- Qualification standard
- AIAA-S111-2014
- Target orbit
- MEO (>1e15 fluence, Van Allen belt)
- Available forms
- Bare cells or CIC assemblies
- Open Circuit Voltage Temperature Coefficient (BOL)
- -5.7 mV/°C
- Short Circuit Current Temperature Coefficient (BOL)
- 10 µA/cm²/°C
- Solar Absorptance
- 0.89
- Emittance
- 0.85
- Cell Thickness
- 80 µm - 225 µm
- Mass
- 50 - 84 mg/cm²
- EOL efficiency at 1e16 fluence (US Standard)
- 0.70
- Voc (BOL)
- 2.782 V
- Jsc (BOL)
- 18.0 mA/cm²
- Vmp (BOL)
- 2.490 V
- Jmp (BOL)
- 17.4 mA/cm²
- EOL efficiency at 1e16 fluence (European Standard)
- 0.74
About
The XTE-HF (High Fluence) is a GaInP/GaAs/Ge lattice-matched triple-junction solar cell optimized for medium Earth orbit and other very high radiation environments exceeding 1e15 1 MeV electron fluence. With 32% BOL efficiency and 23.6% efficiency at 1e16 fluence, it provides excellent end-of-life performance through the harshest orbital radiation belts, including Van Allen belt navigation missions.
Fully qualified under AIAA-S111-2014, the XTE-HF is engineered specifically for GPS/GNSS navigation satellite constellations, MEO communication satellites, and any mission profiled for intense long-duration particle bombardment. Part of Spectrolab’s industry-leading XTE cell family, available as bare cells or CIC assemblies.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.